Test your basic knowledge |

Dairy Cattle And Reproduction

Subjects : industries, dairy
Instructions:
  • Answer 50 questions in 15 minutes.
  • If you are not ready to take this test, you can study here.
  • Match each statement with the correct term.
  • Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.

This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.
1. (switzerland) 2nd in size and milk production - most muscle -






2. 1. to eliminate breeding the females at an early age - 2. makes animals less lean and provides a better cut for the market






3. Important 'landmark' during palpation






4. (male) definition: duct located outside of the testes. 3 parts: head - body - tail. 4 Functions:concentrate sperm - store sperm - transport sperm - site of sperm maturation. entire process takes ~40-60 days






5. Produce testosterone. located between the seminiferous tubules






6. 24 hours before end of estrus cycle






7. 1-3 days






8. (switzerland) 2nd in size and milk production - most muscle -






9. 1. visual evaluation - 2. scrotal circumference - 3. penis and prepuce observation - 4. rectal palpation - 5. libido test - 6. semen evaluation






10. Failure to have one testis (gonad) to descend






11. Failure to have one testis (gonad) to descend






12. Animals which have many estrous periods during certain periods per year (ex: mare - ewe)






13. Can produce 200 calves naturally (~100 bulls) - top 1-2% will grade like him. everything left to chance if no AI performed






14. (FSH) helps to regulate puberty - needed every day - stimulates the sertoli cells to produce nutrients for the sperm






15. Not under a timeline - cow can not be sold as steak






16. 14-19 (17) days






17. Animals which have many estrous periods per year (ex: cow - sow)






18. (LH) stimulates the Leydig cells to produce testosterone






19. Why does estrus happen before ovulation?






20. Hold the penis in the bulls body when not in use. releases penis before ejaculation or urination.






21. 1. sperm is not implanted in egg until hours after breeding. 2. fetal growth has not yet finished.






22. 30-38 hours after estrus cycle begins






23. 1. seminiferous tubules - 2. sertoli cells - 3. leydid or interstitial cells






24. Check feet and legs - look for masculine traits in build such as crest and muscling






25. Castration tool which clamps down on the vans deferens. causes the sperm to not reach the penis to be ejaculated






26. Scar tissue plugs up chambers of udder






27. 16-20 hours






28. 30 hours after estrus begins






29. ~60 days before calving






30. Actual heat cycle (period)






31. When are dairy cattle dehorned?






32. Earlier you castrate a male - the easier it is on the animal. the longer you wait - death rates increase






33. What makes the milk flow through the mammary glands?






34. Knife-loose ~1wk of growth. band-loose ~2wks of growth.






35. (male) definition: duct located outside of the testes. 3 parts: head - body - tail. 4 Functions:concentrate sperm - store sperm - transport sperm - site of sperm maturation. entire process takes ~40-60 days






36. % of fat in milk. makes cheeses and ice cream. regulates cost of milk






37. 1. need to be restricted in amt of grain - 2. no more than 70% of ration can be concentrates. 3. *Acidic acid has to be produced in order for milk synthesis to occur (30% forages)






38. Supply nutrients for the sperm following ejaculation and deposition into the female reproductive tract






39. Duct which connects epididymis to urethra of the penis. transports sperm at ejaculation. cut to sterilize male.






40. What makes the milk flow through the mammary glands?






41. Animals which have many estrous periods during certain periods per year (ex: mare - ewe)






42. Scar tissue plugs up chambers of udder






43. Duct through penis that carries sperm and urine






44. 16-20 hours






45. (FSH) helps to regulate puberty - needed every day - stimulates the sertoli cells to produce nutrients for the sperm






46. Head - neck - mid-piece - tail. genetic material - has an enzyme covering that allows it to penetrate the egg






47. 1. reproduction - 2. mastitis/udder problems - 3. low milk production - 4. soundness/poor feet and legs (living on concrete)






48. 336 days






49. Urinary calculi.






50. Head - neck - mid-piece - tail. genetic material - has an enzyme covering that allows it to penetrate the egg